Methylphenanthrene
甲菲
🗣️ 情景例句
Happy Thanksgiving.
感恩节快乐。
It is better to die with honour than to live in infamy.
光荣的死胜于羞辱的生。
The continents form rugged tablelands which stand nearly three miles above the floor of the open ocean.
大陆是崎岖不平的高地，高出辽阔海洋海底近三英里。